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supported cone

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Justin Lin
2017-05-06 20:19:45 +08:00
parent 7ee9256b9b
commit 76f468888c
1 changed files with 8 additions and 2 deletions
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10
src/helix_extrude.scad
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@@ -13,15 +13,21 @@
module helix_extrude(shape_pts, radius, levels, level_dist,
vt_dir = "SPI_DOWN", rt_dir = "CT_CLK",
twist = 0, scale = 1.0, triangles = "RADIAL") {
r1 = len(radius) == undef ? radius : radius[0];
r2 = len(radius) == undef ? radius : radius[1];
init_r = vt_dir == "SPI_DOWN" ? r2 : r1;
frags = $fn > 0 ?
($fn >= 3 ? $fn : 3) :
max(min(360 / $fa, radius * 6.28318 / $fs), 5);
max(min(360 / $fa, init_r * 6.28318 / $fs), 5);
v_dir = vt_dir == "SPI_UP" ? 1 : -1;
r_dir = rt_dir == "CT_CLK" ? 1 : -1;
angle_step = 360 / frags * r_dir;
initial_angle = atan2(level_dist / frags, 6.28318 * radius / frags) * v_dir * r_dir;
initial_angle = atan2(level_dist / frags, 6.28318 * init_r / frags) * v_dir * r_dir;
path_points = helix(
radius = radius,